Documents contributed by iRedMail users:

* [Build an iRedMail fail-over Cluster with KeepAlived, HAProxy, GlusterFS, OpenLDAP, Mariadb](./haproxy.keepalived.glusterfs.html), contributed by 
* [An Ultra-HA, full Mult-Master E-mail cluster with iRedMail, MariaDB, and IPVS](http://pastebin.com/JcYeQBrX), contributed by Joshua Boniface.